MAX2234x 4-Channel Digital Galvanic Isolators Analog Devices MAX2234x 4-Channel Digital Galvanic Isolators transfer digital signals between circuits with different power domains. The MAX2234x isolators use as little as 0.74mW per channel at 1Mbps (1.8V supply). These isolators feature reinforced isolation for a withstand voltage rating of 3.75kVRMS for 60 seconds. The Analog Devices MAX2234x isolators offer all possible unidirectional channel configurations to accommodate any 4-channel design. These include SPI, RS-485, and digital I/O applications.